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Estimate your Self Assessment tax bill

Test site This is a test site with dummy HMRC services. Do not enter real personal information. How it works.

Provided for Example Accountants

About you

Which tax year do you want to work out?
A tax year runs from 6 April to 5 April.
The next tax year, to plan ahead
The current tax year. It has not ended, so use your best estimates
Tax return and payment due by 31 January 2027
The payment deadline was 31 January 2026
The payment deadline was 31 January 2025

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